D T 5 0 - M C O M M A N D R E F E R E N C E G U I D E 1 . 1 P a g e
13 | 38
OK
Successful response.
ERROR
Error response.
Parameter
Description
esc_char
0...255
The escape sequence is the sequence that forces the
module to switch from the data mode to command
mode, or to enter configuration mode over the air.
To enter configuration mode over the air, this must
be enabled on the specific server or peer, and all
three escape characters must be transmitted in a
single frame.
Upon successful transition to the command mode,
the DCE will transmit an OK response.
Factory default: 43, the "+" character.
6.1.9 Command line termination character S3
AT Command
Description
ATS3=<line_term>
Writes command line termination character.
This setting changes the decimal value of the
character recognized by the DCE from the DTE to
terminate an incoming command line. It is also
generated by the DCE as part of the header, trailer,
and terminator for result codes and information text
along with the S4 parameter.
The previous value of S3 is used to determine the
command line termination character for entry of the
command line containing the S3 setting command.
However, the result code issued shall use the value
of S3 as set during the processing of the command
line. For example, if S3 was previously set to 13 and
the command line "ATS3=30" is issued, the
command line shall be terminated with a CR,
character (13), but the result code issued will use the
character with the ordinal value 30 instead of the CR.
ATS3?
Reads command line termination character.
Response
Description
line_term
OK
Successful read response.
OK
Successful response.
ERROR
Error response.
Parameter
Description
esc_char
0...127
Factory default: 13
